G'day Jesse,
I like the shape of the Lizard (Lacerta). You can't see the Lizard that well right now..best seen in Summer but if you look in your Dad's books you can see the Lizard has a zig zag shape that makes him really easy to spot.
A really wierd one is the Crow (Corvus)...have you ever seen a square crow? That's what it looks like in the books! Rark Rark Rarrrrrrrrrrrrr.....
Peter.